Choosing a design agency or freelancer to carry out your project can be a tough one, and there are many factors to consider. For example, is the freelancer going to be around in 6 months time to make those all important updates to your Website, or is the top London Web design agency going assign your project to the new work experience guy rather than put their best man on the job?
As a client, you are investing in a Web development partner, be it a design agency or an individual freelancer. Your Web development partner will be your first port of call when you want to make a change to your Website, for adding additional functionality, making a visual change, or when things should go wrong (which, only sometimes, they do).
The capacity to scale is also a very important factor to consider. If your requirements suddenly change and you need to take your project to the next level, will your freelance developer be able to deliver the goods?
A huge influence on Web design fees are the overheads of the company carrying out the project. A small company will have low overheads; a freelancer working from home will have lower overheads than the same small company. A large agency will have much higher overheads than both a freelancer and a small company. However, a small company or large design agency will be much more likely to be able to provide capacity to scale, and there will more often than not be someone to take your call should a problem arise.
So, when the quotes come rolling in for your project, consider what you are actually buying into. Consider the quality of the after-sales service that the provider can feasibly offer, and the ability of the provider to accommodate changes in your requirements.